LTC2368CMS-16#PBF

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Data Acquisition - Analog to Digital (ADC) converters are responsible for the conversion of analog signals, mostly electrical in nature, onto digital signals that can be interpreted by computers. The LTC2368CMS-16#PBF from Linear Technology is a 16-bit ADC that functions as a bridge between the analog and digital realms.

Key Features and Benefits

The LTC2368CMS-16#PBF is a low-power ADC that operates in unipolar and bipolar modes for 0-4V and ±4V input signals respectively. It boasts a conversion rate of up to 1Msps and an ENOB (Effective Number of Bits) of 15.3 with a ±1LSB of INL (Integral Nonlinearity). The sample and hold section delivers an excellent 74µV input referred noise on 4V inputs.

The device is programmable and adjustable; users can program the gain, enabling them to use the full range of input voltages while still obtaining the best SNR performance. The input buffer has a high impedance biasing that can work on 3V and 5V supplies, making the device highly versatile and suitable for a variety of input signals. Other features include power-down low power dissipation, an SPI/Microwire compatible serial interface, and an overload protection.

Applications

The LTC2368CMS-16#PBF is a robust low-power ADC with excellent SNR performance; these properties make it ideal for applications with stringent power and noise requirements such as medical, telecommunications and industrial control systems. It is also suitable for applications in portable instrumentation, power measurement systems, and consumer electronics such as musical instruments and audio gear.

Working Principle

The working principle of the LTC2368CMS-16#PBF involves a high performance sampling switch followed by a track-and-hold section. This section is used to sample the input signal and store it in an internal sample-and-hold capacitor. Subsequently, the signal is held on this capacitor while being converted through an internal flash ADC. After the conversion, the output is reconstructed and delivered.

The reference to the ADC is handled through an external voltage applied at the REFIN pin. This feature enables the user to fine-tune the ADC\'s performance. Moreover, the device is supplied with a range of digital control signals that can be used to program it for different applications.

Conclusion

The Linear Technology LTC2368CMS-16#PBF is a low power, high performance 16-bit ADC. It features a low input referred noise of 74µV on 4V inputs, a 1Msps conversion rate, and an effective number of bits of 15.3. The device is programmable and adjustable and is suitable for use in medical, telecommunications, industrial, and consumer applications. This ADC offers an optimal balance of power, noise and performance.

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